"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : Compatibility
Case Name   : 字段是varchar/char,插入空时,默认导入空字符串
Create At   : 2023/06/02
Owner       : n@ningyali
Description :
        1.建表
        2.字段是varchar/char，插入空值
        3.清理环境
Expect      :
        1.创建成功
        2.成功，导入空字符串
        3.成功
History     :
"""
import os
import unittest

from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.COMPATIBILITY.GRAMMAR.LOAD. \
    Opengauss_Compatibility_Grammar_Load_Common import LoadData
from testcase.utils.Logger import Logger
from yat.test import Node


class LoadData0053(unittest.TestCase):
    def setUp(self):
        self.log = Logger()
        self.log.info(f'----{os.path.basename(__file__)} start----')
        self.common = Common()
        self.load_data = LoadData()
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.pri_user = Node('PrimaryDbUser')
        self.case_lable = 'load_data_0053'
        self.db_name = f'db_{self.case_lable}'
        self.t_name = f't_{self.case_lable}'
        self.file_path = os.path.join('/home', self.pri_user.ssh_user)
        self.cols = 'c_id int primary key,c_name varchar(20),' \
                    'salary char(30),c_address varchar(50)'

        text1 = '----pre_step1：创建数据文件；expect:创建成功----'
        self.log.info(text1)
        self.data = "#1|张三|2200.888|北京昌平\n#2|李明|\\N|" \
                    "shanxixian\n#3|\\N|whh|广东广州"
        res = self.load_data.create_data_file(self.pri_user, self.case_lable,
                                              self.data)
        self.assertTrue(res, '执行失败:' + text1)

        text2 = '----pre_step2：创建兼容B库；expect:创建成功----'
        self.log.info(text2)
        res = self.load_data.create_b_db(self.pri_sh, self.db_name)
        self.assertTrue(res, '执行失败:' + text2)

    def test_load(self):
        text = '----step1：建表；expect：建表成功----'
        self.log.info(text)
        res = self.load_data.create_table(self.pri_sh, self.db_name,
                                          self.t_name, self.cols)
        self.assertTrue(res, '执行失败:' + text)

        text = '----step2：字段是varchar/char，插入空值；expect：成功，' \
               '导入空字符串----'
        self.log.info(text)
        f_path = os.path.join(self.file_path, f'{self.case_lable}_1.txt')
        res1 = self.load_data.load_data(self.pri_sh, self.db_name,
                                        self.t_name, f_path,
                                        encoding='utf8', col_sep='|',
                                        line_end='\\n')
        rows, _ = self.common.parse_sql_query_res(res1)
        expect = [['1', '张三', '2200.888', '北京昌平'],
                  ['2', '李明', '', 'shanxixian'],
                  ['3', '', 'whh', '广东广州']]
        self.assertEqual(rows, expect, '执行失败:' + text)

    def tearDown(self):
        self.log.info('----step3：清理环境；expect：清理成功----')
        res = self.load_data.clear_env(self.pri_sh, self.pri_user,
                                       self.db_name,
                                       os.path.join(self.file_path,
                                                    f"{self.case_lable}*"))
        self.assertTrue(res, '执行失败:清理环境')
        self.log.info(f'----{os.path.basename(__file__)} end----')
